Timeline: Looking back over Brexit May 27, 2015 A referendum is promised on EU membership Divisive campaigns ensue June 23, 2016 The UK votes 'leave' by 52% to 48% percent June 24, 2016 Prime Minister David Cameron resigns and is replaced by Theresa May March 29, 2017 May triggers the formal divorce notice, Article 50 and calls a snap election June 9, 2017 May loses her majority and forms a minority government The EU and the UK thrash out the detail for a deal Nov.
13, 2018 May agrees on divorce terms with the EU Jan.
15, 2019 UK lawmakers reject her deal in a huge parliamentary defeat the biggest in modern British history March 22, 2019 May secures an exit date extension to Oct.
31 after failing to get parliamentary approval Parliament remains divided over the Northern Ireland and Ireland border May 24, 2019 May resigns July 24, 2019 Boris Johnson becomes prime minister and vows to leave with, or without, a deal Sept.
4, 2019 Lawmakers pass legislation to block a no-deal Brexit scenario and to seek a further extension if no deal is reached by Oct.